– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 9 pm Sun 22 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 9 pm Sun 22 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 9 pm Sun 22 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 32mm), mostly on Sun night. Becoming colder with a light covering of snow ,mostly falling on Tue afternoon. Freeze-thaw conditions (max 4°C on Sun night, min 0°C on Mon night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 15mm) heaviest on Thu night, then becoming colder with a dusting of snow on Fri morning. Freeze-thaw conditions (max 4°C on Thu morning, min -4°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | | |  | | |  | |  |  |  | | | |
heavy rain | mod. rain | rain shwrs | cloudy | light rain | light snow | light snow | light rain | light rain | light rain | light rain | light rain | mod. rain | light snow | snow shwrs | some clouds | some clouds | rain shwrs | some clouds | |
km/h | |||||||||||||||||||
 |  |  |  |  |  |  | |||||||||||||
— | — | — | — | — | 2 | 3 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | |
14 | 7 | 0.4 | — | 0.3 | 3 | — | 5 | 2 | 1.6 | 0.3 | 1.5 | 10 | 1.7 | — | — | — | 0.1 | — | |
max °C | 4 | 3 | 3 | 1 | 4 | 3 | 1 | 2 | 3 | 3 | 4 | 4 | 4 | 2 | 2 | -1 | 2 | 3 | -2 |
min °C | 3 | 3 | 2 | 0 | 3 | 2 | 0 | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 1 | -4 | 1 | 0 | -2 |
0 | 1 | 2 | -2 | 3 | 0 | -2 | -1 | 1 | 0 | 2 | 1 | 0 | 0 | 1 | -4 | 1 | 0 | -2 | |
1350 | 900 | 1000 | 550 | 1200 | 1000 | 550 | 850 | 900 | 950 | 1050 | 1100 | 1100 | 750 | 750 | 0 | 550 | 850 | 0 | |
Cloud base (m) | 550 | 600 | 600 | 600 | 2150 | 850 | 650 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 650 | 600 | 650 |
 | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — |
 | — | — | 5:42 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:50 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 32mm), mostly on Sun night. Becoming colder with a light covering of snow ,mostly falling on Tue afternoon. Freeze-thaw conditions (max 4°C on Sun night, min 0°C on Mon night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 15mm) heaviest on Thu night, then becoming colder with a dusting of snow on Fri morning. Freeze-thaw conditions (max 4°C on Thu morning, min -4°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.